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polarized light News
Metasurfaces Offer Full Control of Light Polarization
CAMBRIDGE, Mass., Aug. 26, 2021 — Researchers at the Harvard John A. Paulson School of Engineering and Applied Science have developed metasurfaces capable of manipulating the polarization of light with an unprecedented degree of control. “This research shows that the ability to switch between holographic images that need not be limited to just two polarization states,” said Federico Capasso, the Robert L. Wallace Professor of Applied Physics and Vinton Hayes Senior Research Fellow in Electrical Engineering at
Liquid Crystal Microlenses Enable 4D Imaging
NANJING, China, Nov. 25, 2019 — Researchers from Nanjing University have developed a portable, inexpensive, and easy-to-use microlens to acquire 4D images. 4D imaging provides 3D resolution as well as polarization information. Wei Hu, Yan Qing Lu, and colleagues used liquid...
Complex States of Light Generated via Metasurface
CAMBRIDGE, Mass., Nov. 7, 2017 — Researchers have designed a method for converting arbitrary spin angular momentum (SAM) states of light into total angular momentum states. This method is characterized by the superposition of independent orbital angular momentum (OAM), and could...
Magnetic Fields Control Liquid Crystals’ Optical Properties
RIVERSIDE, Calif., June 27, 2014 — A new technique that forms and controls magnetically responsive liquid crystals could be applied to signs, writing tablets and billboards. Conventional liquid crystals, often used in electronic displays, are composed of tiny rod-like molecules....
Well-rounded molecules make better light emitters
SALT LAKE CITY – The more well-rounded the organic molecule, the better – at least when it comes to maximizing light emission. A team led by the University of Utah working to develop more efficient OLEDs believes it has solved a major problem with...
Photodetector discerns polarized light intrinsically
HOUSTON, and LIVERMORE, Calif. – Few photodetector materials can discern polarized light directly without a grate or a filter, but a newly created carbon-based broadband photodetector demonstrates intrinsic polarimetry. A team from Rice University and Sandia National Laboratories...
Well-rounded Molecules Make Better Light Emitters
SALT LAKE CITY, Sept. 30, 2013 — The more well-rounded the organic molecule the better when it comes to maximizing light emission, an international team of physicists and chemists have found. A team led by the University of Utah working to develop more efficient OLEDs believes it...
Photodetector Discerns Polarized Light Intrinsically
HOUSTON & LIVERMORE, Calif., July 18, 2013 — Few photodetector materials can discern polarized light — individual electromagnetic waves oscillating parallel to one another — directly without the use of a grate or a filter. For a newly created carbon-based broadband photodetector, however,...
Waveguides Contain Spinning Photons
LONDON, April 24, 2013 — Electromagnetic waves in waveguides can now be guided in one direction by forcing photons to interact with circulating plasmon polaritons in the near field, or very close to the surface of a small metal nanostructure, an international study has...
Fishy Felon Breaks a Law of Physics
BRISTOL, England, Oct. 23, 2012 — A multilayer crystalline structure used by silvery fish to evade ocean predators bends the laws of physics and could be the key to developing better optical devices.
Light Efficiency in LC Projectors Nearly Doubled
RALEIGH, N.C., July 18, 2012 — A new polarization technology that nearly doubles the energy efficiency of liquid crystal projectors could result in smaller, lower-cost devices with longer battery lives and significantly lower heat levels.
Light from Nanoparticles Controlled
HOUSTON, Oct. 3, 2011 — Rice University researchers have created a technique to control plasmonic scattering from gold nanoparticles using liquid crystals. The researchers use voltage to sensitively manipulate the alignment of liquid crystal molecules that alternately...
Nanostructured Glass Creates 5-D Computer Memory
SOUTHAMPTON, England, Aug. 17, 2011 — A new type of nanostructured glass that has been adapted into a five-dimensional optical recording device has been developed by researchers at the University of Southampton, who say that data stored on the glass will last forever. The...
HD Tech Could Get Big Boost from Little Shrimp
PHILADELPHIA, June 28, 2011 — A two-part man-made waveplate inspired by the eye of the peacock mantis shrimp could improve CD, DVD, Blu-ray and holographic technology, creating even higher definition and larger storage density.
Broadband Graphene Polarizer Invented
PASIR PANJANG, Singapore, June 16, 2011 — A graphene-based polarizer that can broaden the bandwidth of prevailing optical fiber-based telecommunications systems has been invented by researchers at National University of Singapore (NUS). The team, led by professor Kian Ping Loh,...
Ground-based Lasers Map Earth's Magnetic Field
BERKELEY, Calif., Feb. 17, 2011 — Mapping the Earth's magnetic field to find oil, track storms or probe the planet's interior typically requires expensive satellites. University of California, Berkeley, physicists have now come up with a much cheaper way to measure the Earth's...
Quantum cloning: Radiometry on a small scale
GENEVA – Measuring the luminous power of light is a basic task in physics laboratories and telecom applications. Until recently, however, measuring light energy in an absolute manner has required the complex equipment and techniques available only in...
Nano light mill motor controlled by wavelength changes
BERKELEY, Calif. – A newly developed light mill could lead to a whole new crop of nanoscale devices, including nanoscale solar light harvesters, nanoelectromechanical systems, and nanobots that could manipulate DNA and other biological molecules in vivo. ...
Chiral Gold Nanocluster Demystified
JYVÄSKYLÄ, Finland, June 1, 2010 — After ten years, the mystery of the structural, electronic and optical properties of a chiral gold nanocluster, has finally been resolved. Researchers at the Department of Chemistry and Nanoscience Center (NSC) of the University of...
Photons Led Astray
ERLANGEN, Germany, Feb. 17, 2010 – An international team, headed by researchers at the Max Planck Institute for the Science of Light, is using polarized light (light waves that oscillate in a particular plane) to de...
Shrimp Eyes That Polarize
BRISTOL, UK, Oct. 26, 2009 – Mantis shrimp, found on the Great Barrier Reef in Australia, have the most remarkable and complex vision systems known to science. They can see in 12 colors – humans see in only three – and can distinguish between different forms of polarized light....
Light Controls Living Cells
ORLANDO, Fla., Aug. 12, 2009 – Light energy can gently guide and change the orientation of living cells within lab cultures, researchers at the University of Central Florida have demonstrated. The ability to optically steer cells could be a major step in harnessing the healing...
Polarized Light Rules Qubits
GAITHERSBURG, Md., July 7, 2009 – One of the great challenges in creating a working quantum computer is maintaining control over the carriers of information, the ‘switches’ in a quantum processor, while isolating them from the environment. Physicists at NIST have now devised a...
Fake Light Fools Critters
WASHINGTON, Jan. 7, 2009 – Animals that rely on light cues to navigate their environment are being affected by man-made light sources that can alter natural light cycles. A collaboration of ecologists, biologists and biophysicists has shown that polarized as well as direct...
The Polarization of Light by Reflection
Dec 11, 2008 — While the majority of the western world uses polarization-based advances in technology on a daily basis few realize that, were it not for the polarizability of light, these technologies would not be possible.
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April 2024
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